CN101717148B - Method for improving alga removing effect of alga dissolving bacterium organism under aerobic condition - Google Patents
Method for improving alga removing effect of alga dissolving bacterium organism under aerobic condition Download PDFInfo
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- CN101717148B CN101717148B CN2009101993754A CN200910199375A CN101717148B CN 101717148 B CN101717148 B CN 101717148B CN 2009101993754 A CN2009101993754 A CN 2009101993754A CN 200910199375 A CN200910199375 A CN 200910199375A CN 101717148 B CN101717148 B CN 101717148B
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- alga
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention belongs to the technical field of environmental protection, in particular to a method for improving an alga removing effect of alga dissolving bacteria under the aerobic condition. The method comprises the following steps of: using an ionic type enzymatic filler in an SBR reactor; culturing and domesticating a biomembrane in the SBR reactor by active sludge under the aerobic condition (the dissolved oxygen is controlled between 0.8mg/L and 1.5mg/L); enriching alga dissolving bacteria on the biomembrane and then degrading eutrophicated alga-contained sewage; and meanwhile, removing phosphorus and nitrogen in a system and degrading COD. Under the reasonable process parameter running, the discharge water of the SBR reactor can reach the class A discharge standard of a sewage treatment factory, which comprises the chlorophyll a of smaller than 40 ug/L, the CODcr of smaller than 50mg/L, the TN of smaller than 15mg/L, the NH4+/-N of smaller than 5mg/L and the TP of smaller than 0.5mg/L.
Description
Technical field
The invention belongs to the biologic treating technique field of water, waste water or sewage, be specifically related to a kind of method that improves the aerobic condition alga removing effect of alga dissolving bacterium organism under.
Background technology
In recent years, the eutrophication problem of China's water body in lake is very general, and the harmful algae wawter bloom that eutrophication caused is the main threat of many from now on city water resource Sustainable developments.Algal bloom can be controlled by biologic treating technique, but the bioremediation of routine such as fish filter food and biological contact oxidation process etc. then have construction investment height, management and maintenance complexity, remove shortcomings such as algae efficient is low, are not suitable for large-scale waters and administer.If the dissolved oxygen (DO) of biological contact oxidation process aerobic section can be controlled at 0.8～1.5mg/L, then can significantly reduce power consumption except that aeration in the algae process; Be carrier with the new packing simultaneously, the molten phycomycete of enrichment efficient degradation algae on microbial film, thus reach the biological purpose of removing algae of low energy consumption high-efficiency.
At present, have only in the document people such as Tsuji and Kang to biology remove the algae immobilization technology carried out studying (referring to document Chemosphere, 2006,65:117-124; Journal of applied microbiology, 2007,103:1983-1994).In the algae pollution water body treating,,, form microbial film,, can remove the algae in the water body by the microbial processs such as molten phycomycete of enrichment on the medium at dielectric surface by its enrichment, adsorption in conjunction with artificial dielectric efficiently.But the algae removal technology of reporting in the document is not all controlled DO concentration (generally all greater than 2mg/L) in the aerobic aeration process, and the artificial dielectric that adopts carries out on a large scale, and biology also needs further raising except that algae efficient.
People such as Li find when anaerobic-hypoxia (dissolved oxygen is less than 1mg/L) biological dephosphorize denitrification system is studied, low-oxygen aeration does not improve the nitrogen, phosphorus concentration of water outlet in the biosystem (referring to document Bioresour.Technol., 2008,99:4400-4407).Therefore, in order to improve the biological effect of removing algae of molten phycomycete, the present invention proposes aerobic that (DO is controlled under 0.8～1.5mg/L) condition, lays the method for ionic enzymatic filler (number of patent application 2008100408528) in the sbr reactor device.Up to the present, this method is not appeared in the newspapers in the literature as yet.
Summary of the invention
At aerobic in the prior art (the biological algae efficient of removing has much room for improvement under the condition of DO＞2mg/L), the shortcoming that energy consumption is also higher, the objective of the invention is to propose a kind of raising, aerobic (DO is the method for 0.8～1.5mg/L) condition alga removing effect of alga dissolving bacterium organism under.
The method of the raising aerobic condition alga removing effect of alga dissolving bacterium organism under that the present invention proposes, concrete steps are as follows: in the sbr reactor device, lay the ionic enzymatic filler, will be as (adopting A/O or A from the municipal sewage plant
2/ O technology) the remaining active sludge of fetching adds reactor, carries out the domestication of active sludge, the cultivation of bio-film colonization, efficient molten phycomycete.Behind a large amount of efficient molten phycomycetes of enrichment on the microbial film, active sludge is all drained.The algae sewage that contains with eutrophication adds reactor again, carries out aeration then, and the dissolved oxygen under the aerobic condition has been controlled at oxygen condition, and (DO is 0.8～1.5mg/L), carries out biology and remove algae under aerobic condition.Owing to use the ionic enzymatic filler, make the biophase on the microbial film abundanter, the molten phycomycete kind of efficient degradation algae is more, thereby better to the removal effect of algae, and it is higher to remove efficient; At last, the quiescent setting that passes through is with the sewage qualified discharge after handling.
The process flow sheet of the raising aerobic condition alga removing effect of alga dissolving bacterium organism under method that the present invention proposes, as shown in Figure 1.According to the characteristic of filler, the structure of equipment, the preferred processing parameter of the inventive method is: the packing ratio of filler is 0.3～0.6; DO concentration is 0.8～1.5mg/L under the aerobic condition; PH is 7.0～8.0; Activated sludge concentration MLSS is about 3000～8000mg/L; The biological time of removing algae is 4～8h.
The invention has the beneficial effects as follows:
It is (1) aerobic that (DO is the aeration under 0.8～1.5mg/L) condition, has reduced traditional aerobic (higher shortcoming of energy consumption during the aeration of DO＞2mg/L); The adding of new packing simultaneously can increase the value volume and range of product of efficient molten phycomycete on the microbial film, improves the removal efficient that contains algae in the algae dirt of eutrophication, and can reduce the concentrating of nutrients such as nitrogen, phosphorus in the water outlet, prevents the generation of body eutrophication.
(2) present method is under rational operating parameter, algae in the municipal effluent (chlorophyll a), organism, ammonia nitrogen removal frank can reach more than 90%, and water outlet reaches sewage work's first discharge standard: chlorophyll a＜40ug/L, CODcr＜50mg/L, TN＜15mg/L, NH
4 +-N＜5mg/L, TP＜0.5mg/L.
(3) present method operating performance is stable, and anti-shock loading is strong.
Description of drawings
Fig. 1 improves the aerobic (process flow sheet of the method for 0.8～1.5mg/L) condition alga removing effect of alga dissolving bacterium organism under.
Number in the figure: 1 is equalizing tank, the internal memory abundant nutritionization contain algae sewage, 2 is intake pump, 3 is the sbr reactor device, 4 is filler, 5 is aeration head, 6 is magnetic stirring apparatus, 7 is aeration pump, 8 is wet-pit.
Embodiment
Embodiment 1:
The algae sewage disposal that contains with eutrophication is an example, and technical process is pressed shown in the accompanying drawing 1.Containing the algae sewage quality is COD
Cr: 210mg/L, TN:19mg/L, NH
4 +-N:15mg/L, TP:1.0mg/L, chlorophyll a: 460ug/L.Sbr reactor device flooding velocity is 15L/d, and the hydraulic detention time of sewage in reactor is 8h, controls that DO concentration is 1.0 ± 0.20mg/L under the oxygen condition well, and the aerobic treatment time is 6h.Postrun water outlet result is CODcr:20.1mg/L, TN:13.8mg/L, TP:0.40mg/L, NH
4 +-N:2.1mg/L, chlorophyll a: 30.9ug/L, effluent quality meet the one-level A of sewage work emission standard.
Embodiment 2:
The algae sewage disposal that contains with eutrophication is an example, and technical process is pressed shown in the accompanying drawing 1.Control that DO concentration is 0.5 ± 0.20mg/L under the oxygen condition well, all the other are with embodiment 1.Operation result is CODcr:40.6mg/L, TN:18.6mg/L, TP:0.55mg/L, NH
4 +-N:8.3mg/L, chlorophyll a: 76.5ug/L, effluent quality do not meet the one-level A of sewage work emission standard.
Embodiment 3:
The algae sewage disposal that contains with eutrophication is an example, and technical process is pressed shown in the accompanying drawing 1.Control that DO concentration is 1.1 ± 0.20mg/L under the oxygen condition well, the aerobic treatment time is 4h, and all the other are with embodiment 1.Operation result is CODcr:20.5mg/L, TN:18.9mg/L, TP:0.60mg/L, NH
4 +-N:5.5mg/L, chlorophyll a: 29.5ug/L, effluent quality do not meet the one-level A of sewage work emission standard.
Embodiment 4:
The algae sewage disposal that contains with eutrophication is an example, and technical process is pressed shown in the accompanying drawing 1.Containing the algae sewage quality is COD
Cr: 260mg/L, TN:22mg/L, NH
4 +-N:18mg/L, TP:1.0mg/L, chlorophyll a: 520ug/L.Sbr reactor device flooding velocity is 15L/d, and the hydraulic detention time of sewage in reactor is 8h, controls that DO is 1.0 ± 0.20mg/L under the oxygen condition well, and the aerobic treatment time is 7h.Postrun water outlet result is CODcr:35.5mg/L, TN:14.3mg/L, TP:0.48mg/L, NH
4 +-N:1.6mg/L, chlorophyll a: 35.8ug/L, effluent quality meet the one-level A of sewage work emission standard.
Embodiment 5:
The algae sewage disposal that contains with eutrophication is an example, and technical process is pressed shown in the accompanying drawing 1.Control that DO is 0.5 ± 0.20mg/L under the oxygen condition well, all the other are with embodiment 4.Postrun water outlet result is CODcr:56.0mg/L, TN:21.3mg/L, TP:0.65mg/L, NH
4 +-N:9.1mg/L, chlorophyll a: 75.8ug/L, effluent quality do not meet the one-level A of sewage work emission standard.
Embodiment 6:
The algae sewage disposal that contains with eutrophication is an example, and technical process is pressed shown in the accompanying drawing 1.Control that DO is 1.1 ± 0.20mg/L under the oxygen condition well, the aerobic treatment time is 4h, and all the other are with embodiment 4.Postrun water outlet result is CODcr:40.5mg/L, TN:20.3mg/L, TP:0.58mg/L, NH
4 +-N:4.6mg/L, chlorophyll a: 35.4ug/L, effluent quality do not meet the one-level A of sewage work emission standard.
Above-mentioned description to embodiment is can understand and apply the invention for the ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (5)
1. method that improves the aerobic condition alga removing effect of alga dissolving bacterium organism under, it is characterized in that concrete steps are as follows: in the sbr reactor device, install the ionic enzymatic filler, add active sludge and tame, make a large amount of efficient molten phycomycete of enrichment on the microbial film, the active sludge of draining then; The algae sewage that contains with eutrophication adds the sbr reactor device again, carries out aeration then, carries out biology except that algae under aerobic condition, makes the algae sewage that contains after the processing reach emission standard; Wherein, the dissolved oxygen concentration of described aerobic condition is 0.8～1.5mg/L.
2. method according to claim 1 is characterized in that: the packing ratio of enzymatic ionic filler is 0.3～0.6 in the sbr reactor device.
3. method according to claim 1 is characterized in that described active sludge takes from the residual active sludge of sewage work.
4. method according to claim 1 is characterized in that described activated sludge concentration is 3000～8000mg/L.
5. method according to claim 1 is characterized in that the biological time of removing algae is 4～8h.
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| CN2009101993754A CN101717148B (en) | 2009-11-26 | 2009-11-26 | Method for improving alga removing effect of alga dissolving bacterium organism under aerobic condition |
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| CN2009101993754A CN101717148B (en) | 2009-11-26 | 2009-11-26 | Method for improving alga removing effect of alga dissolving bacterium organism under aerobic condition |
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| CN101717148B true CN101717148B (en) | 2011-08-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167476B (en) * | 2011-03-16 | 2012-07-25 | 中国科学院水生生物研究所 | Method for removing algae and microcystin from raw water in water plant |
| CN103145247A (en) * | 2013-04-02 | 2013-06-12 | 上海泓济环保工程有限公司 | Composite HBF (Honess Hybrid Biological&Fixed film Technology) module reactor and sewage treatment process |
| CN107098480B (en) * | 2017-03-23 | 2020-11-03 | 西安建筑科技大学 | Method for assisting algae dissolving bacteria to dissolve algae and in-situ mixing algae dissolving device |
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